Hydraulic engine as pump

Madenia

2009-09-27 18:17:05 UTC

So much depends on the design of the "Hydraulic Engine"

Generally speaking, when we talk about hydraulics (in the US) the two
uses for a "Hydraulic Engine" would be as:

1. Hydraulic pump; this must be connected to a prime mover of some sort, an
electric motor, a gas or diesel engine, a waterwheel, etc. There must be
something to turn the shaft of the pump so that it can pump hydraulic fluid
out to a hydraulic actuator or moter. Even if your pump uses a linear
motion to pump the fluid, it is usually driven by something that provides a
rotary motion. An example would be an axial piston pump.
2. A hydraulic actuator or motor uses the pressurized fluid supplied by the
pump and turns it back into mechanical motion. The motion can be linear, as
with a hydraulic cylinder, or rotary as with a hydraulic motor.

It sounds to me like you want to substitute one hydraulic device for
another. You want to know if a specific hydraulic motor to do the job of a
specific hydraulic pump. In order to answer that question, I need
information about both the pump and the motor; Manufacturers and model
numbers at a minimum. If the manufacturers' have websites with spec sheets
that should be enough information, otherwise I will also need design rpm,
design pressure and displacement per revolution for the two devices.

Carl

Post by Sjokomopu
I'd like to use a hydraulic engine as a backup propulsion system on my boat.
I need max 50kW at 200rpm.
Does anybody know if I can use a hydraulic radial piston engine as a
hydraulic pump while I am not using it (as an engine, that is) as a backup
for my hydraulics system??
I also worry if I could power such a hydraulic engine with my existing axial
piston pump (powered by a 3cyl diesel) or if that is simply a question of
getting the flow vs. pressure right.
Thx for your input,
Al